You cant really say "Tallgeese I is just better, depends on skill". There are some major flaws to the MS such as low hp, low def. Even with limiter break, 2 or 3 lasers will most likely kill you before u flaunt ur stuff. Also, like I said before, a big turn off is the melee spec. Range spec is much easier and useful in many situations.
from what I've seen in TW, EX1 is the easiest since u only need one or two G-3s and the rest probably Cgue/WZ/Wing. And why can't I say that using Kampfer is better? Its obviously more noob friendly and would be a nice first suit. Why not get the basics with a top tier nice suit and then make ur transition down harder and harder? Obviously not fun getting owned in a Red Frame all the time.